Any who reads here regularly know I recently had a head gasket failure on this car. During repair no damage was found other than the actual gasket failure - heads were checked, valve job performed, reassembled with fresh coolant, oil, and filter. Recently a rattling has started from under the car at certain engine speeds. It is getting louder. It sounds like the catalytic converter shields rattling but they are tight. I just wrapped them with wire to double check. I can make the rattle by banging the exhaust with a rubber mallet.
So, whaddya think, did the coolant leak fry the converters? HEGO sensors were not replaced and there are no codes. The car runs wonderfully and has plenty of zoom. I can listen to the engine with a shade-tree stethoscope (long screwdriver with wood end in my ear) and hear a smooth engine. The exhaust manifolds do let me hear some of the rattle but it's far worse outside and under the car.
Finally, anyone got a guess about what I should pay for this repair, if indeed my diagnosis is right? Any guidance as to urgency of repair (I haven't fully paid off the head gasket repair, yet.)
Thanks!
PoD